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			<h1>Bootstrap <span class="color_h1">附加导航（Affix）插件</span></h1>

<p>附加导航（Affix）插件允许指定 &lt;div&gt; 固定在页面的某个位置。一个常见的例子是社交图标。它们将在某个位置开始，但当页面点击某个标记，该 &lt;div&gt; 会锁定在某个位置，不会随着页面其他部分一起滚动。
</p>
<blockquote><img decoding="async" src="/images/quote.png">如果您想要单独引用该插件的功能，那么您需要引用 <b>affix.js</b>。或者，正如 <a target="_top" href="../bootstrap/bootstrap-plugins-overview.html">Bootstrap 插件概览</a> 一章中所提到，您可以引用 <i>bootstrap.js</i> 或压缩版的 <i>bootstrap.min.js</i>。</blockquote>

<h2>用法</h2>
<p>您可以通过 data 属性或者通过 JavaScript 来使用附加导航（Affix）插件。</p>
<ul class="list">
<li><b>通过 data 属性</b>：如需向元素添加附加导航（Affix）行为，只需要向需要监听的元素添加 <b>data-spy="affix"</b> 即可。请使用偏移来定义何时切换元素的锁定和移动。
<h3>实例</h3>
<p>下面的实例演示了通过 data 属性使用附加导航（Affix）插件的用法：</p>
<div class="example"> 
<h2 class="example">实例</h2>
<div class="example_code"> 
<div class="hl-main"><span class="hl-brackets">&lt;</span><span class="hl-code">!</span><span class="hl-var">DOCTYPE</span><span class="hl-code"> </span><span class="hl-var">html</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">html</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">head</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">meta</span><span class="hl-code"> </span><span class="hl-var">charset</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">UTF-8</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">title</span><span class="hl-brackets">&gt;</span><span class="hl-code">Bootstrap 附加导航（Affix）插件</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">title</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">link</span><span class="hl-code"> </span><span class="hl-var">rel</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">stylesheet</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">script</span><span class="hl-code"> </span><span class="hl-var">src</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">script</span><span class="hl-code"> </span><span class="hl-var">src</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">style</span><span class="hl-brackets">&gt;</span></div>
<div class="hl-main"><span class="hl-comment">/*</span><span class="hl-comment"> Custom Styles </span><span class="hl-comment">*/</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">width:</span><span class="hl-code"> </span><span class="hl-number">140</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">margin-top:</span><span class="hl-code"> </span><span class="hl-number">20</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#ddd</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">box-shadow:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-code">rgba</span><span class="hl-code">(</span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0.067</span><span class="hl-code">)</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">margin:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-top:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#ddd</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:first-child</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-top:</span><span class="hl-code"> </span><span class="hl-string">none</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">margin:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">padding:</span><span class="hl-code"> </span><span class="hl-number">8</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">16</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-identifier">.active</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-code">, </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-identifier">.active</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-special">:hover</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">color:</span><span class="hl-code"> </span><span class="hl-var">#fff</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">background:</span><span class="hl-code"> </span><span class="hl-var">#0088cc</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#0088cc</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:first-child</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:last-child</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-identifier">.affix</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">top:</span><span class="hl-code"> </span><span class="hl-number">30</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">; </span><span class="hl-comment">/*</span><span class="hl-comment"> Set the top position of pinned element </span><span class="hl-comment">*/</span><span class="hl-code">
    </span><span class="hl-brackets">}</span></div>
<div class="hl-main"><span class="hl-brackets">&lt;/</span><span class="hl-reserved">style</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">head</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">body</span><span class="hl-code"> </span><span class="hl-var">data-spy</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">scroll</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">data-target</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#myScrollspy</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">container</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
   </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">jumbotron</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h1</span><span class="hl-brackets">&gt;</span><span class="hl-code">Bootstrap Affix</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h1</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">row</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">col-xs-3</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">myScrollspy</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">ul</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">nav nav-tabs nav-stacked</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">data-spy</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">affix</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">data-offset-top</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">125</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">active</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-1</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第一部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-2</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第二部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第三部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-4</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第四部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-5</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第五部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">ul</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">col-xs-9</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-1</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第一部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum. Vivamus fermentum in arcu in aliquam. Quisque aliquam porta odio in fringilla. Vivamus nisl leo, blandit at bibendum eu, tristique eget risus. Integer aliquet quam ut elit suscipit, id interdum neque porttitor. Integer faucibus ligula.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum quis quam ut magna consequat faucibus. Pellentesque eget nisi a mi suscipit tincidunt. Ut tempus dictum risus. Pellentesque viverra sagittis quam at mattis. Suspendisse potenti. Aliquam sit amet gravida nibh, facilisis gravida odio. Phasellus auctor velit at lacus blandit, commodo iaculis justo viverra. Etiam vitae est arcu. Mauris vel congue dolor. Aliquam eget mi mi. Fusce quam tortor, commodo ac dui quis, bibendum viverra erat. Maecenas mattis lectus enim, quis tincidunt dui molestie euismod. Curabitur et diam tristique, accumsan nunc eu, hendrerit tellus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-2</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第二部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Nullam hendrerit justo non leo aliquet imperdiet. Etiam in sagittis lectus. Suspendisse ultrices placerat accumsan. Mauris quis dapibus orci. In dapibus velit blandit pharetra tincidunt. Quisque non sapien nec lacus condimentum facilisis ut iaculis enim. Sed viverra interdum bibendum. Donec ac sollicitudin dolor. Sed fringilla vitae lacus at rutrum. Phasellus congue vestibulum ligula sed consequat.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum consectetur scelerisque lacus, ac fermentum lorem convallis sed. Nam odio tortor, dictum quis malesuada at, pellentesque vitae orci. Vivamus elementum, felis eu auctor lobortis, diam velit egestas lacus, quis fermentum metus ante quis urna. Sed at facilisis libero. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Vestibulum bibendum blandit dolor. Nunc orci dolor, molestie nec nibh in, hendrerit tincidunt ante. Vivamus sem augue, hendrerit non sapien in, mollis ornare augue.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第三部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Integer pulvinar leo id risus pellentesque vestibulum. Sed diam libero, sodales eget sapien vel, porttitor bibendum enim. Donec sed nibh vitae lorem porttitor blandit in nec ante. Pellentesque vitae metus ipsum. Phasellus sed nunc ac sem malesuada condimentum. Etiam in aliquam lectus. Nam vel sapien diam. Donec pharetra id arcu eget blandit. Proin imperdiet mattis augue in porttitor. Quisque tempus enim id lobortis feugiat. Suspendisse tincidunt risus quis dolor fringilla blandit. Ut sed sapien at purus lacinia porttitor. Nullam iaculis, felis a pretium ornare, dolor nisl semper tortor, vel sagittis lacus est consequat eros. Sed id pretium nisl. Curabitur dolor nisl, laoreet vitae aliquam id, tincidunt sit amet mauris.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Phasellus vitae suscipit justo. Mauris pharetra feugiat ante id lacinia. Etiam faucibus mauris id tempor egestas. Duis luctus turpis at accumsan tincidunt. Phasellus risus risus, volutpat vel tellus ac, tincidunt fringilla massa. Etiam hendrerit dolor eget ante rutrum adipiscing. Cras interdum ipsum mattis, tempus mauris vel, semper ipsum. Duis sed dolor ut enim lobortis pellentesque ultricies ac ligula. Pellentesque convallis elit nisi, id vulputate ipsum ullamcorper ut. Cras ac pulvinar purus, ac viverra est. Suspendisse potenti. Integer pellentesque neque et elementum tempus. Curabitur bibendum in ligula ut rhoncus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Quisque pharetra velit id velit iaculis pretium. Nullam a justo sed ligula porta semper eu quis enim. Pellentesque pellentesque, metus at facilisis hendrerit, lectus velit facilisis leo, quis volutpat turpis arcu quis enim. Nulla viverra lorem elementum interdum ultricies. Suspendisse accumsan quam nec ante mollis tempus. Morbi vel accumsan diam, eget convallis tellus. Suspendisse potenti.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-4</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第四部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Suspendisse a orci facilisis, dignissim tortor vitae, ultrices mi. Vestibulum a iaculis lacus. Phasellus vitae convallis ligula, nec volutpat tellus. Vivamus scelerisque mollis nisl, nec vehicula elit egestas a. Sed luctus metus id mi gravida, faucibus convallis neque pretium. Maecenas quis sapien ut leo fringilla tempor vitae sit amet leo. Donec imperdiet tempus placerat. Pellentesque pulvinar ultrices nunc sed ultrices. Morbi vel mi pretium, fermentum lacus et, viverra tellus. Phasellus sodales libero nec dui convallis, sit amet fermentum sapien auctor. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Sed eu elementum nibh, quis varius libero.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum quis quam ut magna consequat faucibus. Pellentesque eget nisi a mi suscipit tincidunt. Ut tempus dictum risus. Pellentesque viverra sagittis quam at mattis. Suspendisse potenti. Aliquam sit amet gravida nibh, facilisis gravida odio. Phasellus auctor velit at lacus blandit, commodo iaculis justo viverra. Etiam vitae est arcu. Mauris vel congue dolor. Aliquam eget mi mi. Fusce quam tortor, commodo ac dui quis, bibendum viverra erat. Maecenas mattis lectus enim, quis tincidunt dui molestie euismod. Curabitur et diam tristique, accumsan nunc eu, hendrerit tellus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Phasellus fermentum, neque sit amet sodales tempor, enim ante interdum eros, eget luctus ipsum eros ut ligula. Nunc ornare erat quis faucibus molestie. Proin malesuada consequat commodo. Mauris iaculis, eros ut dapibus luctus, massa enim elementum purus, sit amet tristique purus purus nec felis. Morbi vestibulum sapien eget porta pulvinar. Nam at quam diam. Proin rhoncus, felis elementum accumsan dictum, felis nisi vestibulum tellus, et ultrices risus felis in orci. Quisque vestibulum sem nisl, vel congue leo dictum nec. Cras eget est at velit sagittis ullamcorper vel et lectus. In hac habitasse platea dictumst. Etiam interdum iaculis velit, vel sollicitudin lorem feugiat sit amet. Etiam luctus, quam sed sodales aliquam, lorem libero hendrerit urna, faucibus rhoncus massa nibh at felis. Curabitur ac tempus nulla, ut semper erat. Vivamus porta ullamcorper sem, ornare egestas mauris facilisis id.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Ut ut risus nisl. Fusce porttitor eros at magna luctus, non congue nulla eleifend. Aenean porttitor feugiat dolor sit amet facilisis. Pellentesque venenatis magna et risus commodo, a commodo turpis gravida. Nam mollis massa dapibus urna aliquet, quis iaculis elit sodales. Sed eget ornare orci, eu malesuada justo. Nunc lacus augue, dictum quis dui id, lacinia congue quam. Nulla sem sem, aliquam nec dolor ac, tempus convallis nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Nulla suscipit convallis iaculis. Quisque eget commodo ligula. Praesent leo dui, facilisis quis eleifend in, aliquet vitae nunc. Suspendisse fermentum odio ac massa ultricies pellentesque. Fusce eu suscipit massa.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-5</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第五部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Nam eget purus nec est consectetur vehicula. Nullam ultrices nisl risus, in viverra libero egestas sit amet. Etiam porttitor dolor non eros pulvinar malesuada. Vestibulum sit amet est mollis nulla tempus aliquet. Praesent luctus hendrerit arcu non laoreet. Morbi consequat placerat magna, ac ornare odio sagittis sed. Donec vitae ullamcorper purus. Vivamus non metus ac justo porta volutpat.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vivamus mattis accumsan erat, vel convallis risus pretium nec. Integer nunc nulla, viverra ut sem non, scelerisque vehicula arcu. Fusce bibendum convallis augue sit amet lobortis. Cras porta urna turpis, sodales lobortis purus adipiscing id. Maecenas ullamcorper, turpis suscipit pellentesque fringilla, massa lacus pulvinar mi, nec dignissim velit arcu eget purus. Nam at dapibus tellus, eget euismod nisl. Ut eget venenatis sapien. Vivamus vulputate varius mauris, vel varius nisl facilisis ac. Nulla aliquet justo a nibh ornare, eu congue neque rutrum.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Suspendisse a orci facilisis, dignissim tortor vitae, ultrices mi. Vestibulum a iaculis lacus. Phasellus vitae convallis ligula, nec volutpat tellus. Vivamus scelerisque mollis nisl, nec vehicula elit egestas a. Sed luctus metus id mi gravida, faucibus convallis neque pretium. Maecenas quis sapien ut leo fringilla tempor vitae sit amet leo. Donec imperdiet tempus placerat. Pellentesque pulvinar ultrices nunc sed ultrices. Morbi vel mi pretium, fermentum lacus et, viverra tellus. Phasellus sodales libero nec dui convallis, sit amet fermentum sapien auctor. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Sed eu elementum nibh, quis varius libero.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Morbi sed fermentum ipsum. Morbi a orci vulputate tortor ornare blandit a quis orci. Donec aliquam sodales gravida. In ut ullamcorper nisi, ac pretium velit. Vestibulum vitae lectus volutpat, consequat lorem sit amet, pulvinar tellus. In tincidunt vel leo eget pulvinar. Curabitur a eros non lacus malesuada aliquam. Praesent et tempus odio. Integer a quam nunc. In hac habitasse platea dictumst. Aliquam porta nibh nulla, et mattis turpis placerat eget. Pellentesque dui diam, pellentesque vel gravida id, accumsan eu magna. Sed a semper arcu, ut dignissim leo.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Sed vitae lobortis diam, id molestie magna. Aliquam consequat ipsum quis est dictum ultrices. Aenean nibh velit, fringilla in diam id, blandit hendrerit lacus. Donec vehicula rutrum tellus eget fermentum. Pellentesque ac erat et arcu ornare tincidunt. Aliquam erat volutpat. Vivamus lobortis urna quis gravida semper. In condimentum, est a faucibus luctus, mi dolor cursus mi, id vehicula arcu risus a nibh. Pellentesque blandit sapien lacus, vel vehicula nunc feugiat sit amet.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">body</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">html</span><span class="hl-brackets">&gt;</span></div>
</div><br>
<a target="_blank" href="../try/demo_source/bootstrap3-plugin-affix1.htm" target="_blank" class="tryitbtn">尝试一下 »</a>
</div>
<p>结果如下所示：</p>
<div class="cover" style="border: 1px solid #D6D6D6;padding: 5px;">
<img decoding="async" src="/wp-content/uploads/2014/07/affix_plugin_demo.jpg" alt="附加导航（Affix）插件 Data 属性" />
</div>
</li>
<p></p>
<li><b>通过 JavaScript</b>：您可以通过 JavaScript 手动为某个元素添加附加导航（Affix），如下所示：
<pre class="prettyprint">
$('#myAffix').affix({
   offset: {
&nbsp;&nbsp;&nbsp;&nbsp;  top: 100, bottom: function () {
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; return (this.bottom = 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$('.bs-footer').outerHeight(true))
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }
&nbsp;&nbsp;&nbsp;&nbsp;  }
})
</pre>
<h3>实例</h3>
<p>下面的实例演示了通过 JavaScript 使用附加导航（Affix）插件的用法：</p>
<div class="example"> 
<h2 class="example">实例</h2>
<div class="example_code"> 
<div class="hl-main"><span class="hl-brackets">&lt;</span><span class="hl-code">!</span><span class="hl-var">DOCTYPE</span><span class="hl-code"> </span><span class="hl-var">html</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">html</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">head</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">meta</span><span class="hl-code"> </span><span class="hl-var">charset</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">UTF-8</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">title</span><span class="hl-brackets">&gt;</span><span class="hl-code">Bootstrap 附加导航（Affix）插件</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">title</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">link</span><span class="hl-code"> </span><span class="hl-var">rel</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">stylesheet</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/bootstrap/3.3.7/css/bootstrap.min.css</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">script</span><span class="hl-code"> </span><span class="hl-var">src</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/jquery/2.1.1/jquery.min.js</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">script</span><span class="hl-code"> </span><span class="hl-var">src</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">http://cdn.static.runoob.com/libs/bootstrap/3.3.7/js/bootstrap.min.js</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">style</span><span class="hl-brackets">&gt;</span></div>
<div class="hl-main"><span class="hl-comment">/*</span><span class="hl-comment"> Custom Styles </span><span class="hl-comment">*/</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">width:</span><span class="hl-code"> </span><span class="hl-number">140</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">margin-top:</span><span class="hl-code"> </span><span class="hl-number">20</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#ddd</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">box-shadow:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-code">rgba</span><span class="hl-code">(</span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0</span><span class="hl-code">, </span><span class="hl-number">0.067</span><span class="hl-code">)</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">margin:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-top:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#ddd</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:first-child</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-top:</span><span class="hl-code"> </span><span class="hl-string">none</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">margin:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">padding:</span><span class="hl-code"> </span><span class="hl-number">8</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">16</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-identifier">.active</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-code">, </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-identifier">.active</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-special">:hover</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">color:</span><span class="hl-code"> </span><span class="hl-var">#fff</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">background:</span><span class="hl-code"> </span><span class="hl-var">#0088cc</span><span class="hl-reserved"></span><span class="hl-code">;
        </span><span class="hl-reserved">border:</span><span class="hl-code"> </span><span class="hl-number">1</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-string">solid</span><span class="hl-code"> </span><span class="hl-var">#0088cc</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:first-child</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-code"> </span><span class="hl-identifier">li</span><span class="hl-special">:last-child</span><span class="hl-code"> </span><span class="hl-identifier">a</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">border-radius:</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">0</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-code"> </span><span class="hl-number">4</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">;
    </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-identifier">ul</span><span class="hl-identifier">.nav-tabs</span><span class="hl-identifier">.affix</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-reserved">top:</span><span class="hl-code"> </span><span class="hl-number">30</span><span class="hl-string">px</span><span class="hl-reserved"></span><span class="hl-code">; </span><span class="hl-comment">/*</span><span class="hl-comment"> Set the top position of pinned element </span><span class="hl-comment">*/</span><span class="hl-code">
    </span><span class="hl-brackets">}</span></div>
<div class="hl-main"><span class="hl-brackets">&lt;/</span><span class="hl-reserved">style</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span></div>
<div class="hl-main"><span class="hl-code">$</span><span class="hl-brackets">(</span><span class="hl-builtin">document</span><span class="hl-brackets">)</span><span class="hl-code">.</span><span class="hl-identifier">ready</span><span class="hl-brackets">(</span><span class="hl-reserved">function</span><span class="hl-brackets">(</span><span class="hl-brackets">)</span><span class="hl-brackets">{</span><span class="hl-code">
    $</span><span class="hl-brackets">(</span><span class="hl-quotes">&quot;</span><span class="hl-string">#myNav</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">)</span><span class="hl-code">.</span><span class="hl-identifier">affix</span><span class="hl-brackets">(</span><span class="hl-brackets">{</span><span class="hl-code">
        </span><span class="hl-identifier">offset</span><span class="hl-code">: </span><span class="hl-brackets">{</span><span class="hl-code"> 
            </span><span class="hl-identifier">top</span><span class="hl-code">: </span><span class="hl-number">125</span><span class="hl-code"> 
      </span><span class="hl-brackets">}</span><span class="hl-code">
    </span><span class="hl-brackets">}</span><span class="hl-brackets">)</span><span class="hl-code">;
</span><span class="hl-brackets">}</span><span class="hl-brackets">)</span><span class="hl-code">;</span></div>
<div class="hl-main"><span class="hl-brackets">&lt;/</span><span class="hl-reserved">script</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">head</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">body</span><span class="hl-code"> </span><span class="hl-var">data-spy</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">scroll</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">data-target</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#myScrollspy</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">container</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
   </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">jumbotron</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h1</span><span class="hl-brackets">&gt;</span><span class="hl-code">Bootstrap Affix</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h1</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">row</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">col-xs-3</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">myScrollspy</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">ul</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">nav nav-tabs nav-stacked</span><span class="hl-quotes">&quot;</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">myNav</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">active</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-1</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第一部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-2</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第二部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第三部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-4</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第四部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
                </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;</span><span class="hl-reserved">a</span><span class="hl-code"> </span><span class="hl-var">href</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">#section-5</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第五部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">a</span><span class="hl-brackets">&gt;</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">li</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">ul</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">div</span><span class="hl-code"> </span><span class="hl-var">class</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">col-xs-9</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-1</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第一部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum. Vivamus fermentum in arcu in aliquam. Quisque aliquam porta odio in fringilla. Vivamus nisl leo, blandit at bibendum eu, tristique eget risus. Integer aliquet quam ut elit suscipit, id interdum neque porttitor. Integer faucibus ligula.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum quis quam ut magna consequat faucibus. Pellentesque eget nisi a mi suscipit tincidunt. Ut tempus dictum risus. Pellentesque viverra sagittis quam at mattis. Suspendisse potenti. Aliquam sit amet gravida nibh, facilisis gravida odio. Phasellus auctor velit at lacus blandit, commodo iaculis justo viverra. Etiam vitae est arcu. Mauris vel congue dolor. Aliquam eget mi mi. Fusce quam tortor, commodo ac dui quis, bibendum viverra erat. Maecenas mattis lectus enim, quis tincidunt dui molestie euismod. Curabitur et diam tristique, accumsan nunc eu, hendrerit tellus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-2</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第二部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Nullam hendrerit justo non leo aliquet imperdiet. Etiam in sagittis lectus. Suspendisse ultrices placerat accumsan. Mauris quis dapibus orci. In dapibus velit blandit pharetra tincidunt. Quisque non sapien nec lacus condimentum facilisis ut iaculis enim. Sed viverra interdum bibendum. Donec ac sollicitudin dolor. Sed fringilla vitae lacus at rutrum. Phasellus congue vestibulum ligula sed consequat.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum consectetur scelerisque lacus, ac fermentum lorem convallis sed. Nam odio tortor, dictum quis malesuada at, pellentesque vitae orci. Vivamus elementum, felis eu auctor lobortis, diam velit egestas lacus, quis fermentum metus ante quis urna. Sed at facilisis libero. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Vestibulum bibendum blandit dolor. Nunc orci dolor, molestie nec nibh in, hendrerit tincidunt ante. Vivamus sem augue, hendrerit non sapien in, mollis ornare augue.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-3</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第三部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Integer pulvinar leo id risus pellentesque vestibulum. Sed diam libero, sodales eget sapien vel, porttitor bibendum enim. Donec sed nibh vitae lorem porttitor blandit in nec ante. Pellentesque vitae metus ipsum. Phasellus sed nunc ac sem malesuada condimentum. Etiam in aliquam lectus. Nam vel sapien diam. Donec pharetra id arcu eget blandit. Proin imperdiet mattis augue in porttitor. Quisque tempus enim id lobortis feugiat. Suspendisse tincidunt risus quis dolor fringilla blandit. Ut sed sapien at purus lacinia porttitor. Nullam iaculis, felis a pretium ornare, dolor nisl semper tortor, vel sagittis lacus est consequat eros. Sed id pretium nisl. Curabitur dolor nisl, laoreet vitae aliquam id, tincidunt sit amet mauris.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Phasellus vitae suscipit justo. Mauris pharetra feugiat ante id lacinia. Etiam faucibus mauris id tempor egestas. Duis luctus turpis at accumsan tincidunt. Phasellus risus risus, volutpat vel tellus ac, tincidunt fringilla massa. Etiam hendrerit dolor eget ante rutrum adipiscing. Cras interdum ipsum mattis, tempus mauris vel, semper ipsum. Duis sed dolor ut enim lobortis pellentesque ultricies ac ligula. Pellentesque convallis elit nisi, id vulputate ipsum ullamcorper ut. Cras ac pulvinar purus, ac viverra est. Suspendisse potenti. Integer pellentesque neque et elementum tempus. Curabitur bibendum in ligula ut rhoncus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Quisque pharetra velit id velit iaculis pretium. Nullam a justo sed ligula porta semper eu quis enim. Pellentesque pellentesque, metus at facilisis hendrerit, lectus velit facilisis leo, quis volutpat turpis arcu quis enim. Nulla viverra lorem elementum interdum ultricies. Suspendisse accumsan quam nec ante mollis tempus. Morbi vel accumsan diam, eget convallis tellus. Suspendisse potenti.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-4</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第四部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Suspendisse a orci facilisis, dignissim tortor vitae, ultrices mi. Vestibulum a iaculis lacus. Phasellus vitae convallis ligula, nec volutpat tellus. Vivamus scelerisque mollis nisl, nec vehicula elit egestas a. Sed luctus metus id mi gravida, faucibus convallis neque pretium. Maecenas quis sapien ut leo fringilla tempor vitae sit amet leo. Donec imperdiet tempus placerat. Pellentesque pulvinar ultrices nunc sed ultrices. Morbi vel mi pretium, fermentum lacus et, viverra tellus. Phasellus sodales libero nec dui convallis, sit amet fermentum sapien auctor. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Sed eu elementum nibh, quis varius libero.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vestibulum quis quam ut magna consequat faucibus. Pellentesque eget nisi a mi suscipit tincidunt. Ut tempus dictum risus. Pellentesque viverra sagittis quam at mattis. Suspendisse potenti. Aliquam sit amet gravida nibh, facilisis gravida odio. Phasellus auctor velit at lacus blandit, commodo iaculis justo viverra. Etiam vitae est arcu. Mauris vel congue dolor. Aliquam eget mi mi. Fusce quam tortor, commodo ac dui quis, bibendum viverra erat. Maecenas mattis lectus enim, quis tincidunt dui molestie euismod. Curabitur et diam tristique, accumsan nunc eu, hendrerit tellus.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Phasellus fermentum, neque sit amet sodales tempor, enim ante interdum eros, eget luctus ipsum eros ut ligula. Nunc ornare erat quis faucibus molestie. Proin malesuada consequat commodo. Mauris iaculis, eros ut dapibus luctus, massa enim elementum purus, sit amet tristique purus purus nec felis. Morbi vestibulum sapien eget porta pulvinar. Nam at quam diam. Proin rhoncus, felis elementum accumsan dictum, felis nisi vestibulum tellus, et ultrices risus felis in orci. Quisque vestibulum sem nisl, vel congue leo dictum nec. Cras eget est at velit sagittis ullamcorper vel et lectus. In hac habitasse platea dictumst. Etiam interdum iaculis velit, vel sollicitudin lorem feugiat sit amet. Etiam luctus, quam sed sodales aliquam, lorem libero hendrerit urna, faucibus rhoncus massa nibh at felis. Curabitur ac tempus nulla, ut semper erat. Vivamus porta ullamcorper sem, ornare egestas mauris facilisis id.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Ut ut risus nisl. Fusce porttitor eros at magna luctus, non congue nulla eleifend. Aenean porttitor feugiat dolor sit amet facilisis. Pellentesque venenatis magna et risus commodo, a commodo turpis gravida. Nam mollis massa dapibus urna aliquet, quis iaculis elit sodales. Sed eget ornare orci, eu malesuada justo. Nunc lacus augue, dictum quis dui id, lacinia congue quam. Nulla sem sem, aliquam nec dolor ac, tempus convallis nunc. Interdum et malesuada fames ac ante ipsum primis in faucibus. Nulla suscipit convallis iaculis. Quisque eget commodo ligula. Praesent leo dui, facilisis quis eleifend in, aliquet vitae nunc. Suspendisse fermentum odio ac massa ultricies pellentesque. Fusce eu suscipit massa.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">hr</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">h2</span><span class="hl-code"> </span><span class="hl-var">id</span><span class="hl-code">=</span><span class="hl-quotes">&quot;</span><span class="hl-string">section-5</span><span class="hl-quotes">&quot;</span><span class="hl-brackets">&gt;</span><span class="hl-code">第五部分</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">h2</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Nam eget purus nec est consectetur vehicula. Nullam ultrices nisl risus, in viverra libero egestas sit amet. Etiam porttitor dolor non eros pulvinar malesuada. Vestibulum sit amet est mollis nulla tempus aliquet. Praesent luctus hendrerit arcu non laoreet. Morbi consequat placerat magna, ac ornare odio sagittis sed. Donec vitae ullamcorper purus. Vivamus non metus ac justo porta volutpat.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Vivamus mattis accumsan erat, vel convallis risus pretium nec. Integer nunc nulla, viverra ut sem non, scelerisque vehicula arcu. Fusce bibendum convallis augue sit amet lobortis. Cras porta urna turpis, sodales lobortis purus adipiscing id. Maecenas ullamcorper, turpis suscipit pellentesque fringilla, massa lacus pulvinar mi, nec dignissim velit arcu eget purus. Nam at dapibus tellus, eget euismod nisl. Ut eget venenatis sapien. Vivamus vulputate varius mauris, vel varius nisl facilisis ac. Nulla aliquet justo a nibh ornare, eu congue neque rutrum.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Suspendisse a orci facilisis, dignissim tortor vitae, ultrices mi. Vestibulum a iaculis lacus. Phasellus vitae convallis ligula, nec volutpat tellus. Vivamus scelerisque mollis nisl, nec vehicula elit egestas a. Sed luctus metus id mi gravida, faucibus convallis neque pretium. Maecenas quis sapien ut leo fringilla tempor vitae sit amet leo. Donec imperdiet tempus placerat. Pellentesque pulvinar ultrices nunc sed ultrices. Morbi vel mi pretium, fermentum lacus et, viverra tellus. Phasellus sodales libero nec dui convallis, sit amet fermentum sapien auctor. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Sed eu elementum nibh, quis varius libero.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Morbi sed fermentum ipsum. Morbi a orci vulputate tortor ornare blandit a quis orci. Donec aliquam sodales gravida. In ut ullamcorper nisi, ac pretium velit. Vestibulum vitae lectus volutpat, consequat lorem sit amet, pulvinar tellus. In tincidunt vel leo eget pulvinar. Curabitur a eros non lacus malesuada aliquam. Praesent et tempus odio. Integer a quam nunc. In hac habitasse platea dictumst. Aliquam porta nibh nulla, et mattis turpis placerat eget. Pellentesque dui diam, pellentesque vel gravida id, accumsan eu magna. Sed a semper arcu, ut dignissim leo.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
            </span><span class="hl-brackets">&lt;</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">Sed vitae lobortis diam, id molestie magna. Aliquam consequat ipsum quis est dictum ultrices. Aenean nibh velit, fringilla in diam id, blandit hendrerit lacus. Donec vehicula rutrum tellus eget fermentum. Pellentesque ac erat et arcu ornare tincidunt. Aliquam erat volutpat. Vivamus lobortis urna quis gravida semper. In condimentum, est a faucibus luctus, mi dolor cursus mi, id vehicula arcu risus a nibh. Pellentesque blandit sapien lacus, vel vehicula nunc feugiat sit amet.</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">p</span><span class="hl-brackets">&gt;</span><span class="hl-code">
        </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
    </span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">div</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">body</span><span class="hl-brackets">&gt;</span><span class="hl-code">
</span><span class="hl-brackets">&lt;/</span><span class="hl-reserved">html</span><span class="hl-brackets">&gt;</span></div>
</div><br>
<a target="_blank" href="../try/demo_source/bootstrap3-plugin-affix2.htm" target="_blank" class="tryitbtn">尝试一下 »</a>
</div>
<p>结果如下所示：</p>
<div class="cover" style="border: 1px solid #D6D6D6;padding: 5px;">
<img decoding="async" src="/wp-content/uploads/2014/07/affix_plugin_demo.jpg" alt="附加导航（Affix）插件 Javascript" />
</div>
</li>
</ul>
<h2>通过 CSS 定位</h2>
<p>在上面两种使用附加导航（Affix）插件的方式中，您都必须通过 CSS 定位内容。附加导航（Affix）插件在三种 class 之间切换，每种 class 都呈现了特定的状态：<i> .affix、.affix-top 和 .affix-bottom</i>。请按照下面的步骤，来为这三种状态设置您自己的 CSS（不依赖此插件）。</p>
<ul class="list">
<li>在开始时，插件添加 <b>.affix-top</b> 来指示元素在它的最顶端位置。这个时候不需要任何的 CSS 定位。</li>
<li>当滚动经过添加了附加导航（Affix）的元素时，应触发实际的附加导航（Affix）。此时 <b>.affix</b> 会替代 <b>.affix-top</b>，同时设置 <b>position: fixed;</b>（由 Bootstrap 的 CSS 代码提供）。</li>
<li>如果定义了底部偏移，当滚动到达该位置时，应把 <b>.affix</b> 替换为 <b>.affix-bottom</b>。由于偏移是可选的，假如设置了该偏移，则要求同时设置适当的 CSS。在这种情况下，请在必要的时候添加 <b>position: absolute;</b>。</li>
</ul>

<h2>选项</h2>
<p>有一些选项是通过 data 属性或 JavaScript 来传递的。下表列出了这些选项：</p>
<table class="reference notranslate">
<tr><th>选项名称</th><th>类型/默认值</th><th>Data 属性名称</th><th>描述</th></tr>
<tr><td>offset</td><td>number | function | object<br> <i>默认值：10</i></td><td>data-offset</td><td>当计算滚动位置时，距离顶部的偏移像素。如果设置了一个数字，则该偏移量的值将被应用在顶部和底部。如果设置了一个对象偏移，则其值形如 offset: { top: 10 } 或 offset: { top: 10, bottom: 5 }。如果需要动态计算偏移，请使用函数。</td></tr>
</table>			<!-- 其他扩展 -->
						
			</div>
			
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.wrapper {
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  cursor: help;
  font-family: "Gill Sans", Impact, sans-serif;
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  position: relative;
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  width: 200px;
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  -webkit-transform: translateY(10px);
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       -o-transform: translateY(10px);
          transform: translateY(10px);
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          transition: all .25s ease-out;
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          box-shadow: 2px 2px 6px rgba(0, 0, 0, 0.28);
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.tooltip a {
	color:#fff;
}
/* This bridges the gap so you can mouse into the tooltip without it disappearing */
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  bottom: -20px;
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}  

/* CSS Triangles - see Trevor's post */
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</style>

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<script src=""></script>
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<div id="respond" class="no_webshot"> 
		<div class="comment-signarea" style=" padding: 20px 20px;"> 
	<h3 class="text-muted" id="share_code" style="color: #799961;"><i class="fa fa-pencil-square-o" aria-hidden="true"></i> 点我分享笔记</h3>
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		<div class="comt">
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							<li class="form-inline"><label class="hide" for="author">昵称</label><input class="ipt" type="text" name="author" id="author" value="" tabindex="2" placeholder="昵称"><span class="text-muted">昵称 (必填)</span></li>
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		</div>

	</form>
	</div>
<script type="text/javascript">
$(function() {
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	var editor = new Simditor({
	  textarea: $('#mded'),
	  placeholder: '写笔记...',
	  upload:false,
	 // upload: {url:'/api/comment_upload_file.php',params: null,fileKey: 'upload_file',connectionCount: 1,leaveConfirm: '文件正在上传，您确定离开?'},
	  defaultImage: 'https://www.runoob.com/images/logo.png',
	  codeLanguages: '',
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		$("#commentform").show();
		$('html, body').animate({
       	    scrollTop: $("#respond").offset().top
    	}, 200);
	});

	// 提交笔记
	var commentform=$('#commentform');
	commentform.prepend('<div id="comment-status" style="display:none;" ></div>');
	var statusdiv=$('#comment-status');
	
	commentform.submit(function(e){
		e.preventDefault();
		var noteContent = editor.getValue();
		// console.log(noteContent);
		noteContent = noteContent.replace(/<pre><code>/g,"<pre>");
		noteContent = noteContent.replace(/<\/code><\/pre>/g,"</pre>");
		
		// 系列化表单数据
		var comment_parent = 0;
		var is_user_logged_in = $("#is_user_logged_in").val();
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			// var formdata=commentform.serialize() + "&comment=" + noteContent ;
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	*/
	//Upvote.create('runoobvote-id', {callback: vote_callback});
	var ajaxurl = 'https://www.runoob.com/wp-admin/admin-ajax.php';
	var callback = function(data) {
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		//console.log(data);
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		id_arr = data.id.split('-');
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function isBlank(str) {
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}

</script>

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